Today at 25 yards with the same Colt’s SAA Lyman 429667 ww .431” Alox with the published minimum of Bullseye hit eight (8) inches higher than; RCBS 44-200-CM ww .430” Alox with a mid range charge of Trail Boss.
The shooting was done one handed.
I wouldn’t have expected a full eight (8) inches between these two loads at 25 yards.